Andropogon glomeratus |
Andropogon glomeratus var. scabriglumis |
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bushy beardgrass, bushy bluestem |
beardgrass, roughglume bushy bluestem, Southwestern bushy bluestem |
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Habit | Plants cespitose, upper portion dense, oblong to oblanceolate or obpyramidal. | Plants oblanceolate to obpyramidal in the upper portion. | ||||||||||||||||
Culms | 20-250 cm; internodes green, sometimes glaucous; branches mostly erect, straight. |
80-150 cm; internodes not glaucous. |
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Sheaths | usually scabrous, sometimes smooth; ligules 0.6-2.2 mm, sometimes ciliate, cilia to 0.9 mm; blades 13-109 cm long, 2.9-9.5 mm wide, glabrous or sparsely to densely pubescent, hairs usually spreading, rarely appressed. |
usually scabrous; ligules ciliate, cilia 0.2-0.5 mm; blades green, smooth or pubescent. |
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Inflorescence units | 10-600 per culm; subtending sheaths (2.0)2.9-4.4(6.5) cm long, (1.5)2.3-3.4(4.4) mm wide; peduncles (1)6-14(60) mm, with 2(4) rames; rames (1)1.7-2.5(3.5) cm, exserted or not at maturity, pubescence sparse basally and increasing in density distally within each internode. |
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Sessile | spikelets 3-5 mm; callus hairs 1-2.5 mm; keels of lower glumes sometimes scabrous below midlength, usually scabrous distally; awns 6-19 mm; anthers 1(3), 0.5-1.5 mm, yellow, red, or purple. |
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Pedicellate | spikelets vestigial or absent, sterile. |
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Subtending | sheaths of inflorescence units (2.3)2.9-4.5(6.3) cm long, (1.5)2.3-3.3(4.4) mm wide; peduncles (2)5-10(16) mm; rames (1.7)1.9-2.3(2.8) cm, exerted. |
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Keels | of lower glumes usually scabrous below and above the midpoint. |
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2n | = 20. |
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Andropogon glomeratus |
Andropogon glomeratus var. scabriglumis |
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Distribution |
AL; AR; AZ; CA; DC; DE; FL; GA; IL; KY; LA; MA; MD; MS; NC; NJ; NM; NV; NY; OH; OK; PA; RI; SC; TN; TX; UT; VA; WV; HI; PR; Virgin Islands
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CA; NM |
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Discussion | Andropogon glomeratus hybridizes with both A. longiberbis and A. virginicus. Some of its varieties are morphologically similar to the latter species. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Andropogon glomeratus var. scabriglumis grows in moist soils of seepage slopes and the edges of springs, from California to New Mexico and southward into Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 25, p. 661. | FNA vol. 25, p. 664. | ||||||||||||||||
Parent taxa | Poaceae > subfam. Panicoideae > tribe Andropogoneae > Andropogon > sect. Leptopogon | Poaceae > subfam. Panicoideae > tribe Andropogoneae > Andropogon > sect. Leptopogon > Andropogon glomeratus | ||||||||||||||||
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Subordinate taxa | ||||||||||||||||||
Name authority | (Walter) Britton, Sterns & Poggenb. | C.S. Campb. | ||||||||||||||||
Web links |